Crystallization in Ga–Sb–Se glasses and influence of the Se content

Crystallization in glasses composed of Ga, Sb and Se has been studied as a function of Se content. Six glass compositions are selected (Ga8Sb27Se65, Ga12Sb23Se65, Ga8Sb32Se60, Ga10Sb30Se60, Ga8Sb37Se55 and Ga8Sb40Se52), with different Se contents. Glass-ceramics are obtained by heating the glass 5 °...

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Bibliographic Details
Published in:Journal of non-crystalline solids 2024-01, Vol.624, p.122727, Article 122727
Main Authors: Verger, Louisiane, Ganesaratnam, Vinuyan, Nazabal, Virginie, Chenu, Sébastien, Calers, Christophe, Coq, David Le, Calvez, Laurent, Hernandez, Olivier, Zhang, Xiang-Hua
Format: Article
Language:English
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Chemical Sciences
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Summary:Crystallization in glasses composed of Ga, Sb and Se has been studied as a function of Se content. Six glass compositions are selected (Ga8Sb27Se65, Ga12Sb23Se65, Ga8Sb32Se60, Ga10Sb30Se60, Ga8Sb37Se55 and Ga8Sb40Se52), with different Se contents. Glass-ceramics are obtained by heating the glass 5 °C above its glass transition temperature. Glasses and glass-ceramics are characterized by differential scanning calorimetry, Raman spectroscopy, infrared spectroscopy and X-ray diffraction. A correlation between the Se content, the nature of the phase crystallizing and the electrical conducting properties of the material is evidenced. On one hand, antimony selenide Sb2Se3 crystallizes in over-stoichiometric and stoichiometric glasses compared to the x Ga2Se3 -(100-x) Sb2Se3 line. On the other hand, an unknown phase crystallizes in sub-stoichiometric glasses, followed by Sb2Se3. The resulting glass-ceramics are characterized by a conductivity reaching up to 2 S·cm−1, two order of magnitude higher than other Se-based glass-ceramics.
ISSN:0022-3093
DOI:10.1016/j.jnoncrysol.2023.122727